Process for producing hot rolled steel strip with adjusted stren

Details Process for producing hot rolled steel strip with adjusted stren Process for producing hot rolled steel strip with adjusted stren

1994-01-21

1998-06-02

Ip, Sikyin

Metal treatment

Process of modifying or maintaining internal physical...

Utilizing disclosed mathematical formula or relationship

148608, 148610, C21D 600, C21D 802, C22C 3840

Patent

active

057593043

ABSTRACT:
In a process for producing hot rolled steel strip with adjusted strength a steel with 0.04 to 0.06% carbon, at most 1% silicon, at most 1% manganese, 13 to 18% chromium, at most 2% nickel, balance carbide formers and iron, inclusive of impurities due to melting, is melted, the actual content of carbide formers within the specified limits is determined, a rolling oversize for a subsequent hot rolling is established in dependence on the actual content of carbide formers, and the hot rolled strip is solution annealed at a temperature of 920.degree. to 1050.degree. C. and quenched to a ferritic-martensitic structure and cold rolled down to the specified final thickness.

REFERENCES:
patent: 4824491 (1989-04-01), Tanaka et al.
patent: 5131960 (1992-07-01), Kluge

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